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ACPICA: Parser: Allow method invocations as target operands

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ACPICA commit a6cca7a4786cdbfd29cea67e84b5b01a8ae6ff1c

Method invocations as target operands are allowed as target
operands in the ASL grammar. This change implements support
for this. Method must return a reference for this to work
properly at runtime, however.

Link: https://github.com/acpica/acpica/commit/a6cca7a4
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Bob Moore 2016-12-28 15:29:43 +08:00 committed by Rafael J. Wysocki
parent 74e30f96ad
commit ce87e09dd8
4 changed files with 67 additions and 39 deletions
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82
drivers/acpi/acpica/psargs.c
View file

@ -269,23 +269,13 @@ acpi_ps_get_next_namepath(struct acpi_walk_state *walk_state,
*/
if (ACPI_SUCCESS(status) &&
possible_method_call && (node->type == ACPI_TYPE_METHOD)) {
if (walk_state->opcode == AML_UNLOAD_OP) {
/*
* acpi_ps_get_next_namestring has increased the AML pointer,
* so we need to restore the saved AML pointer for method call.
*/
walk_state->parser_state.aml = start;
walk_state->arg_count = 1;
acpi_ps_init_op(arg, AML_INT_METHODCALL_OP);
return_ACPI_STATUS(AE_OK);
}
/* This name is actually a control method invocation */
method_desc = acpi_ns_get_attached_object(node);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Control Method - %p Desc %p Path=%p\n", node,
method_desc, path));
"Control Method invocation %4.4s - %p Desc %p Path=%p\n",
node->name.ascii, node, method_desc, path));
name_op = acpi_ps_alloc_op(AML_INT_NAMEPATH_OP, start);
if (!name_op) {
@ -719,6 +709,10 @@ acpi_ps_get_next_arg(struct acpi_walk_state *walk_state,
ACPI_FUNCTION_TRACE_PTR(ps_get_next_arg, parser_state);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Expected argument type ARGP: %s (%2.2X)\n",
acpi_ut_get_argument_type_name(arg_type), arg_type));
switch (arg_type) {
case ARGP_BYTEDATA:
case ARGP_WORDDATA:
@ -796,11 +790,14 @@ acpi_ps_get_next_arg(struct acpi_walk_state *walk_state,
}
break;
case ARGP_TARGET:
case ARGP_SUPERNAME:
case ARGP_SIMPLENAME:
case ARGP_NAME_OR_REF:
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"**** SimpleName/NameOrRef: %s (%2.2X)\n",
acpi_ut_get_argument_type_name(arg_type),
arg_type));
subop = acpi_ps_peek_opcode(parser_state);
if (subop == 0 ||
acpi_ps_is_leading_char(subop) ||
@ -816,29 +813,41 @@ acpi_ps_get_next_arg(struct acpi_walk_state *walk_state,
return_ACPI_STATUS(AE_NO_MEMORY);
}
/* To support super_name arg of Unload */
status =
acpi_ps_get_next_namepath(walk_state, parser_state,
arg,
ACPI_NOT_METHOD_CALL);
} else {
/* Single complex argument, nothing returned */
if (walk_state->opcode == AML_UNLOAD_OP) {
status =
acpi_ps_get_next_namepath(walk_state,
parser_state, arg,
ACPI_POSSIBLE_METHOD_CALL);
walk_state->arg_count = 1;
}
break;
/*
* If the super_name argument is a method call, we have
* already restored the AML pointer, just free this Arg
*/
if (arg->common.aml_opcode ==
AML_INT_METHODCALL_OP) {
acpi_ps_free_op(arg);
arg = NULL;
}
} else {
status =
acpi_ps_get_next_namepath(walk_state,
parser_state, arg,
ACPI_NOT_METHOD_CALL);
case ARGP_TARGET:
case ARGP_SUPERNAME:
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"**** Target/Supername: %s (%2.2X)\n",
acpi_ut_get_argument_type_name(arg_type),
arg_type));
subop = acpi_ps_peek_opcode(parser_state);
if (subop == 0) {
/* NULL target (zero). Convert to a NULL namepath */
arg =
acpi_ps_alloc_op(AML_INT_NAMEPATH_OP,
parser_state->aml);
if (!arg) {
return_ACPI_STATUS(AE_NO_MEMORY);
}
status =
acpi_ps_get_next_namepath(walk_state, parser_state,
arg,
ACPI_POSSIBLE_METHOD_CALL);
} else {
/* Single complex argument, nothing returned */
@ -849,6 +858,11 @@ acpi_ps_get_next_arg(struct acpi_walk_state *walk_state,
case ARGP_DATAOBJ:
case ARGP_TERMARG:
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"**** TermArg/DataObj: %s (%2.2X)\n",
acpi_ut_get_argument_type_name(arg_type),
arg_type));
/* Single complex argument, nothing returned */
walk_state->arg_count = 1;

4
drivers/acpi/acpica/psloop.c
View file

@ -92,6 +92,10 @@ acpi_ps_get_arguments(struct acpi_walk_state *walk_state,
ACPI_FUNCTION_TRACE_PTR(ps_get_arguments, walk_state);
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"Get arguments for opcode [%s]\n",
op->common.aml_op_name));
switch (op->common.aml_opcode) {
case AML_BYTE_OP: /* AML_BYTEDATA_ARG */
case AML_WORD_OP: /* AML_WORDDATA_ARG */

10
drivers/acpi/acpica/psobject.c
View file

@ -348,7 +348,15 @@ acpi_ps_create_op(struct acpi_walk_state *walk_state,
argument_count) {
op->common.flags |= ACPI_PARSEOP_TARGET;
}
} else if (parent_scope->common.aml_opcode == AML_INCREMENT_OP) {
}
/*
* Special case for both Increment() and Decrement(), where
* the lone argument is both a source and a target.
*/
else if ((parent_scope->common.aml_opcode == AML_INCREMENT_OP)
|| (parent_scope->common.aml_opcode ==
AML_DECREMENT_OP)) {
op->common.flags |= ACPI_PARSEOP_TARGET;
}
}

10
drivers/acpi/acpica/pstree.c
View file

@ -129,10 +129,10 @@ acpi_ps_append_arg(union acpi_parse_object *op, union acpi_parse_object *arg)
union acpi_parse_object *prev_arg;
const struct acpi_opcode_info *op_info;
ACPI_FUNCTION_ENTRY();
ACPI_FUNCTION_TRACE(ps_append_arg);
if (!op) {
return;
return_VOID;
}
/* Get the info structure for this opcode */
@ -144,7 +144,7 @@ acpi_ps_append_arg(union acpi_parse_object *op, union acpi_parse_object *arg)
ACPI_ERROR((AE_INFO, "Invalid AML Opcode: 0x%2.2X",
op->common.aml_opcode));
return;
return_VOID;
}
/* Check if this opcode requires argument sub-objects */
@ -153,7 +153,7 @@ acpi_ps_append_arg(union acpi_parse_object *op, union acpi_parse_object *arg)
/* Has no linked argument objects */
return;
return_VOID;
}
/* Append the argument to the linked argument list */
@ -181,6 +181,8 @@ acpi_ps_append_arg(union acpi_parse_object *op, union acpi_parse_object *arg)
op->common.arg_list_length++;
}
return_VOID;
}
/*******************************************************************************